Improvement in inkstands



S. DARLIN G.

lnkstands.

Patented N0v .17,18 74.

UNITED STATES PATENT OFFIoE SAMUEL DARLING, OF PROVIDENCE, RHODE ISLAND.

IMPROVEMENT IN INKSTANDS.

Specification forming part of Letters Patent No. 156,840, dated November17, l 874; application filed August 24, 1874.

To all whom it may concern:

Be it known that I, SAMUEL DARLING, of Providence, in the county ofProvidence, State of Rhode Island, have invented certain new and usefulImprovements in the Manufacture of Inkstands; and Ido hereby declarethat the following is a full, clear, and exact description thereof,sufficient, in connection with the accompanying drawings, to enablethose skilled in the art to practice my invention.

My invention relates to a novel mode of constructingbarometer-inkstands; and consists in making an ink and aniair cavity orspace below andin front of the reservoir; in making a dipping-cupdirectly over and with its lower part extending down into the cavity, sothat it may be immersed in ink when the inkstand is in working order; inmaking the lower portion of the dipping-cup a straight tube, and theupper, part above the level of the ink flaring; in providing thedipping-cup with an ad justable pen-gage; in making an opening for thepassage of air to and from the ink-reservoir; in attaching a gate orregulator to the outlet of the reservoir 3 in making the inkstand in twoparts, and securing them together by means of grooved projections andcement, and in making the bottom of the ink-reservoir above theink-level in the dipping-cup.

Figure 1 represents a top View of my improved inkstand; Fig. 2, a sideview; Fig. 3, a bottom view; Fig. 4, a vertical section at line 0 0,Fig. 1; Fig. 5, a front vertical section at linepp, Fig. 1.

Similar letters of reference indicate correspondin g parts.

.A is the ink-reservoir, which is placed above the level of the ink inthe dipping-cup O, to avoid the great waste of ink which takes placewhen the bottom of the reservoir and the lootbe immersed in the ink.That part of said cavity which is above the ink-levelis made very broad,so that the ink which may be forced out of the reservoir by theexpansion of the air within it may spread over that broad space, and notchange materially the height of the ink in the dipping-cup.

This cavity need not.necessarily be made in the exact shape hereindescribed, but may be made in any desirable form without departing fromthe nature of my invention. For example, it may be made to increase insize gradually or regularly from the bottom upward, so that there shallalways be a con siderable depth of ink in the upper part of the cavity,to prevent the drying of the ink.

D is an ink and air passage or duct from the upper part of cavity Btothe reservoir. The upper part or margin of the duct D and the upperpart or ceiling of the cavity B are nearly on the same plane or level.The upper part of said cavity may be made still lower down, say about aneighth of an inch. It requires a space of about one-quarter of an inchabove the ink at b before the air will pass into the reservoir throughthe duct D; hence it will be seen that the ink in the dipping-cup willstand about one-quarter of an inch below the upper margin of the passageor duct D. The upper part of the dipping-cup (represented by E) is madesufficiently flaring to enable the writer to see the ink in the ordinaryposition of the inkstand. F is an adjustable pen-gage, by which thewriter can regulate the amount of ink that he will take upon his pen.This gage is held in position by a rubber band or packing, H, and isarranged to produce sufficient friction to keep it in place, but not somuch but what it can be readily moved and regulated when desirable. Whenthis gage is used in an inkstand in which the ink is continually beinglowered by use, it can be pressed down from time to time as needed. Itcan be r moved from the dipping-cup by means of a hooked wire. The hole*6 through the center of "the gage is to be smaller than the pen whichis to be used, and its upper part may be made flaring for convenience indipping. j is an opening through the elevated part 0, for the passage ofair to and from the overflow-chamber in the upper part of cavity B, andmay be of any suitable size or shape desirable, and lead into saidcavity from any convenient point above the ink. It is preferable,however, to have it well elevated, to prevent its being filled with inkby accident. P is a stopper,

which is to be removed when the inkstand is to be cleansed.

This inkstand may be supplied with ink through the dipping-cup or thehole 0 when the plane of the base is nearly in a vertical position.

It is well known to those familiar with the process of manufacturingglass that the articles manufactured by pressing or blowing will vary inthickness, and in such an article as an inkstand there is liable to be adifference of about one-eighth of an inch, and it will be obvious thatin my inkstands the height of the ink in the dipping-cups will varyaccording to the different thicknesses of the tops, were there no way toregulate it. To avoid such a defect I supply the duct or passage D witha gate or regulator, G, by the raising or lowering of which the ink inthe dipping-cup may be changed. This gate maybe made of rubber or anysuitable material.

Wishing to make my improved inkstand of glass, and finding itimpracticable to make it in one piece, I make it in separate parts andcement them together; and to make the union more permanent and secure Ipress the upper part, which is represented by n n a n n, withprojections or supports it t t on the inside wall, from a sixteenth toan eighth of an inch thick and about one-quarter of an inch wide. Thelower piece, u u a u, is pressed with grooves g g g in its rim or edge,to correspond with the projections in the upper part. Previous toputting the parts together the projections are to be out out, so thatafter the two pieces are brought together the lower piece may be revolved to bring the grooves away from, and the full-size rim under, theprojections. They may be cemented together with any of the known cementsfor such purposes.

I do not claim an inkstand with an overflow chamber, when there is afree passage for air from said chamber through the dipping-orifice, asdescribed in Patent N 0. 73,284, to N. Gray Bartlett, January 14, 1868;neither do I claim an inkstand having a float in the dipping cup ororifice, as described in Patent No. 32,207, to J. W. Ross, 'April 30,1861; nor do I claim in this application an inkstand having a pengage inany form except substantially as herein described; nor an inkstand madein separate parts and cemented together, when the parts are not securedtogether by cut proj cctions, as described above; but

What I claim, and desire to secure by Letters Patent, is p 1. Abarometerinkstand having, in combination with the ink-reservoir, anoverflowchamber which has no air communication with the dipping-cup, adipping cup or orifice the lowerpart of which is rendered air-tight bybeing immersed in ink, and a suitable vent or air-passage above andleading into said chamber, substantially as described.

2. A barometer-inkstand having a gate between the reservoir anddipping-cup, for regulating the height of the ink, substantially asdescribed.

3. An inkstand having, in combination with the dipping orifice or cup, apen-gage, which is held stationary with due permanence when in use, andis susceptible of being raised or depressed in said cup from time totime, as

the height of the ink requires, substantially as described.

SAMUEL DARLING.

Witnesses: JOHN E. HALL, WALTER B. VINCENT.

